Apetroleum engineer wants to determine the average amount of petroleum in a given rock formation. which of the following statistical measurements will provide him with this data? mean median mode range

What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

Tooth enamel consists mainly of the mineral calcium hydroxyapatite, ca_10(po_4)_6(oh)_2. trace elements in teeth of archaeological specimens provide anthropologist with clues about diet and diseases of ancient people. students at hamline university measured strontium in enamel from extracted wisdom teeth by atomic absorption spectroscopy. solutions with a constant total volume of 10.0 ml contained 0.726 mg of dissolved tooth enamel plus variable concentrations of added sr. added sr find the concentration of sr in the 10 ml sample solution in parts per billion = ng/ml. find the concentration of sr in tooth enamel in parts per million = mu g/g.